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Publication detail
KALA, Z.
Original Title
Fuzzy probability analysis of the fatigue resistance of steel structural members under bending
Type
journal article - other
Language
English
Original Abstract
The paper is aimed at the fuzzy probabilistic analysis of fatigue resistance due to uncertainty of input parameters. The fatigue resistance of the steel member is evaluated by linear fracture mechanics as the number of cycles leading to the propagation of initial cracks into a critical crack resulting in brittle fracture. When the histogram of stress range is known, the fatigue resistance is a random variable. In the event that the histogram is unknown or was acquired from a small number of experiments, another source of uncertainty is of an epistemic origin. Two basic approaches, which make provision for uncertainty of input histograms of stress range, are illustrated in the paper. Uncertainty of histograms of stress range is taken into account by the variability of equivalent stress range in the first stochastic approach. Input histograms as considered as members of a fuzzy set in the second approach.
Keywords
Fatigue, steel, crack, probability, fuzzy, simulation, sensitivity
Authors
RIV year
2008
Released
1. 2. 2008
Location
Lotyšsko
ISBN
1392-3730
Periodical
Journal of civil engineering and management
Year of study
14
Number
1
State
Republic of Lithuania
Pages from
67
Pages to
72
Pages count
6
BibTex
@article{BUT48728, author="Zdeněk {Kala}", title="Fuzzy probability analysis of the fatigue resistance of steel structural members under bending", journal="Journal of civil engineering and management", year="2008", volume="14", number="1", pages="67--72", issn="1392-3730" }